ra·tio·nal /'ra-shə-nəl/ adj
1: having reason or understanding
2: relating to, based on, or guided by reason, principle, fairness, logic, a legitimate state interest, or a consideration of fact
age distinctions are not subject to strict scrutiny, but they must have a rational relationship to a legitimate state interest — In re J. M., 642 A.2d 1062 (1994)
ra·tio·nal·i·ty /ˌra-shə-'na-lə-tē/ n
ra·tio·nal·ly adv
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.